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Precautions to be observed in entering abandoned exploratory shafts and pits

Rock strata gases in mines of the East Tintic mining district, Utah

Use of Vacutainers for collection of mine atmosphere samples

A statistical determination of spark ignition safety factors in methane, propane, and ethylene mixtures in air

Probability of resistive spark ignition caused by very low currents

Probability of spark ignition in intrinsically safe circuits

Published Year

• 1920-1929 (2)
• 1970-1979 (1)
• 1980-1989 (3)

Subject

• Mine gases--Safety measures (6) *
• Mining machinery--Electric equipment--Safety measures (3)
• Mine gases (2)
• Abandoned coal mines (1)
• Abandoned coal mines--Accidents (1)
• Abandoned mines (1)
• Abandoned mines--Risk assessment (1)
• Blackdamp (1)
• Electric apparatus and appliances--Safety measures (1)
• Electric discharges (1)
• Firedamp (1)
• Methane (1)
• Mine gases--Analysis (1)
• Mine gases--Utah (1)
• Mine safety (1)
• Mine shafts (1)
• Mine shafts--Safety measures (1)
• Mines and mineral resources (1)
• Mines and mineral resources--Utah (1)

Author

• Cawley, James C. (3)
• Craft, Robert L., (1)
• Freedman, Robert W. (1)
• Humphrey, William G., (1)
• McElroy, G. E. (1)
• Pickard, Byron O., (1)

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